Pitman.



J. A. WILSON.

PITMAN.

"APPLICATION FILED MAR. 14, 1908.

Patented July 6, 1909.

a c t H a. U W ad JOHN A. WILSON, OF MARPLE, NEBRASKA.

PITMAN.

Specification of Letters Patent.

' Patented July 6, 1009.

Application filed March 14, 1908. Serial No. 421,122.

To all whom it may concern:

Be it known that I, JOHN A. WrLsoN, a citizen of the United States,residing at Marple, in the county of Boxbutte and State of ebraska, haveinvented new and useful Improvements in Pitrnen, of which the followingis a specification. r

This invention relates to pitmen, and the object of the invention is toprovide a device of this character which may be readilyadjusted. to takeup wear.

To these ends the invention resides in the novel construction of pitmen,hereinafter fully described and claimed.

. In the accompanying drawings, Figure 1 is a top plan view of a pitmanconstructed In accordance with my invention. Fig. 2 is a longitudinalsectional view upon the line 2-2 of 3. Fig. 3 is a similar view upon theline 3-3 of Fig. 1. s

. In the accompanying drawings the nu' meral ,1 designates a continuousmetal strap, having its ends rounded as indicated in the figures of thedrawin s. This strap 1 has its sides suitably spaced and its endsprovided with reinforcing elements 2. The strap 1 has its sides providedwith a plurality of openings adapted for the reception of securingelements, the purpose of which will hereinafter be more fully described.Inte osed between the sides of the strap 1 are t e itman sections 3 and4. These sections 3 an ,4 may be constructed of any desired. materialand are each provided with transverse slots 5, adapted for the recs)tion of retaining bolts 6, which are also a apted for engagement withthe openings provided in the sides of the strap 1, and by which thesections 3 and 4 are secured upon the strap. The sections 3 and 4 havetheir ends arc-shaped to complete the circle provided by the ends of theand and the reinforcements 2, whereby a snug bearing is provided for theoffsets of the cranks to which the pitman is adapted to be secured. Thesections 3 andd are also pro vidcd with centrally arrangedlongitudinally extending slots or openings 7, adapted for the receptionof retaining elements 8, by which. a top plate 9 is secured upon thesecstantia tions. ,This top plate 9 serves as an effective 50reinforcement for the sectionsand' is rvided with a centrally arrangedupstan .ing portion or offset 10. This offset 10 comprises a horizontalwall provided witha suitable centrally arranged opening and outwardlyinclined sides connected with the body of the plate. The adjacent endsof the sections 3 and 4 are beveled or inclined toward each other, asindicated by the numerals 11 and 1.2, and interposed between the faces11 and 12 is an inclined or beveled spreader element 13. This spreader13 is provided with acentTalaperture adapted forthe rece tion of a boltor other securing-device 14, having its threaded portion extendingthrough the opening provided in the hori-*, zontal wall of the offset 10and adapted for the reception of a suitable nut 15, by which thespreader 13 may be drawn toward the horizontal wall of the offset 10 andthe arms 3 and 4 forced toward the ends of the band 1. It will beunderstood that the retaining elements 6 and 8 have their nutssufficiently loosened to allow the free movement of the sections 3 and4.

From the above description it will be seen that I have provided asimple, chea and effective pitman which may be readi y adjusted to comensate for'wear by the crank shafts to whi the "pitman, isattached, andone which may be readily adjusted while positioned upon the machine.

Havin thus fully described-the invention what is c aimed as new is:

In a llpitman, an endless band of a suby rectangularformation having itsends rounded, reinforcements for these ends, gitman sections .betweenthe sides of the and and extending longitudinall from the center of theband, said sections eing-caelnQO. provided with a series of vertical andtransverse elongated o enings, securing elements connecting the si( esof the band and engaging the transverse openings of the pitman sections,a top plate-provided with a central upwardly extending offset portion,headed retaining elements engaging the under face .ofthe pitman sectionsand extending through gaging the Wedge shaped member and the \Vitnessesa the vertical slots and conneeted with the top threaded elenlent substantially as. and 01 plate, the pitman sections having theirmeetthe purpose setforth; ing ends arranged at angles away from each Intestimonywhereof :tlfiX my signature other, a; wedge shaped member forthese in presence of two witnesses. angular faces; and a threadedelement enl JO H N (L; WILSON.

top of the offset of the top plate and a t R. H. YATKINS,

threaded securing "member engagmg th 1 C. EIOTTE

